APA
World Health Organization, King's College London, . (2011). The humanitarian emergency settings perceived needs scale (HESPER) : manual with scale. Geneva: World Health Organization.
Chicago
World Health Organization, King's College London, . 2011. The humanitarian emergency settings perceived needs scale (HESPER) : manual with scale. Geneva: World Health Organization.
Harvard
World Health Organization, King's College London, . (2011). The humanitarian emergency settings perceived needs scale (HESPER) : manual with scale. Geneva: World Health Organization.
MLA
World Health Organization, King's College London, . The humanitarian emergency settings perceived needs scale (HESPER) : manual with scale. Geneva: World Health Organization. 2011.